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Finding the Fourth Proportional to 12,672.76, 18,998.94 and 8,711.95

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Solution

The fourth proportional to 12,672.76, 18,998.94 and 8,711.95 is: 13,060.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672.76 : 18,998.94 = 8,711.95 : x
  2. Step 2: Convert to fraction form
    12,672.76/18,998.94 = 8,711.95/x
  3. Step 3: Cross multiply
    12,672.76x = 18,998.94 × 8,711.95
  4. Step 4: Simplify right side
    12,672.76x = 165,517,815.33
  5. Step 5: Solve for x
    x = 165,517,815.33/12,672.76
  6. Step 6: Final answer
    x = 13,060.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.